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RISK-MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES - Notional Quantities for Derivative Instruments (Details) - Futures and swaps	3 Months Ended	12 Months Ended
	Mar. 31, 2024 GWh Bcf MMBbls	Dec. 31, 2022 GWh Bcf MMBbls
Derivatives designated as hedging instruments | - Natural gas (Bcf) | Fixed price | Sold / Receiver
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume | Bcf	17.4	16.0
Derivatives designated as hedging instruments | - Natural gas (Bcf) | Basis | Sold / Receiver
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume | Bcf	17.2	16.0
Derivatives designated as hedging instruments | - NGLs, Refined Products and crude oil (MMBbl) | Fixed price | Sold / Receiver
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume | MMBbls	16.0	14.5
Derivatives designated as hedging instruments | - Power (GWh) | Fixed price | Net Purchased / Payor
Derivative [Line Items]
Derivative, nonmonetary notional amount, energy measure | GWh	22,100	22,100,000
Derivatives not designated as hedging instruments | - Natural gas (Bcf) | Fixed price | Sold / Receiver
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume | Bcf	0	0.7
Derivatives not designated as hedging instruments | - Natural gas (Bcf) | Basis | Sold / Receiver
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume | Bcf	0	0.7
Derivatives not designated as hedging instruments | - NGLs, Refined Products and crude oil (MMBbl) | Fixed price | Sold / Receiver
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume | MMBbls	0.6
Derivatives not designated as hedging instruments | - NGLs, Refined Products and crude oil (MMBbl) | Fixed price | Net Purchased / Payor
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume | MMBbls		0.1
Derivatives not designated as hedging instruments | - NGLs, Refined Products, and crude oil (MMBbl) | Basis | Sold / Receiver
Derivative [Line Items]
Derivative, nonmonetary notional amount, volume | MMBbls	1.4	0.1

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480237/815-40-50-5

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- Definition

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+ References

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- Definition

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+ References

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